The Sun is expected to run out of hydrogen fuel in 5 billion years! Afterwards, it is expected to tap into helium as a fuel source. Freeman narrates that at that point, the Sun will expand, "it will swallow Mercury."
Christopher McKay proposes migrating to the planet Mars if the Earth gets too hot. Freeman narrates,"Mars will survive even after the Earth is burned to a crisp." Perfluorocarbons or PFCs will need to be used to terraform Mars.
After the Sun burns helium for 2 billion years, it collapses into a white dwarf star.
National Ignition Facility (NIF) is the world's most energetic laser.
Freeman explains that Shawn Westmoreland has proposed "tethering a tiny black hole to a spaceship" to propel the spaceship in order to allow inter-stellar travel.
At the time of this documentary, the hottest temperature can be reached inside the LHC in Switzerland; the temperature of smashing particles at the LHC can get a 100,000 times hotter than the center of the Sun.
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